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For centuries people have recorded fiery objects falling through the sky and hitting the Earth. We now call these objects meteorites. Scientists believe meteorites are comet or asteroid debris. In space these fragments are called meteoroids. Only when they hit the Earth are they called meteorites.

Each year up to 60,000 tonnes of meteorites fall to Earth. Most are less than one millimetre across and are called micrometeorites. Recently, a scientist from The Natural History Museum discovered a very unusual micrometeorite - help him to unravel its million-year-old history...